Tafsir of Al-Hajj 22:58

The Great Reward for Those Who migrate in the Cause of Allah Allah says:

والذين هاجروا في سبيل الله ثم قتلوا أو ماتوا

Those who emigrated in the cause of Allah and after that were killed or died, Allah tells us that those who migrate for the sake of Allah, seeking to earn His pleasure and that which is with Him, leaving behind their homelands, families and friends, leaving their countries for the sake of Allah and His Messenger to support His religion, then they are killed, i.e., in Jihad, or they die, i.e., they pass away without being involved in fighting, they will have earned an immense reward. As Allah says:

ومن يخرج من بيته مهجرا إلى الله ورسوله ثم يدركه الموت فقد وقع أجره على الله

And whosoever leaves his home as an emigrant unto Allah and His Messenger, and death overtakes him, his reward is then surely incumbent upon Allah. (4:100)

ليرزقنهم الله رزقا حسنا

surely, Allah will provide a good provision for them. means, He will reward them from His bounty and provision in Paradise with that which will bring them joy.

وإن الله لهو خير الرازقين